CVSS: 7.5EPSS: 0%CPEs: 31EXPL: 6CVE-2023-49786 – Asterisk susceptible to Denial of Service via DTLS Hello packets during call initiation
https://notcve.org/view.php?id=CVE-2023-49786
14 Dec 2023 — Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1; as well as certified-asterisk prior to 18.9-cert6; Asterisk is susceptible to a DoS due to a race condition in the hello handshake phase of the DTLS protocol when handling DTLS-SRTP for media setup. This attack can be done continuously, thus denying new DTLS-SRTP encrypted calls during the attack. Abuse of this vulnerability may lead to a massive Denial of Service on vulnerabl... • https://packetstorm.news/files/id/176251 • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') CWE-703: Improper Check or Handling of Exceptional Conditions •
CVSS: 8.5EPSS: 0%CPEs: 31EXPL: 0CVE-2023-37457 – Asterisk's PJSIP_HEADER dialplan function can overwrite memory/cause crash when using 'update'
https://notcve.org/view.php?id=CVE-2023-37457
14 Dec 2023 — Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk versions 18.20.0 and prior, 20.5.0 and prior, and 21.0.0; as well as ceritifed-asterisk 18.9-cert5 and prior, the 'update' functionality of the PJSIP_HEADER dialplan function can exceed the available buffer space for storing the new value of a header. By doing so this can overwrite memory or cause a crash. This is not externally exploitable, unless dialplan is explicitly written to update a header based on data from an out... • https://github.com/asterisk/asterisk/commit/a1ca0268254374b515fa5992f01340f7717113fa • CWE-120: Buffer Copy without Checking Size of Input ('Classic Buffer Overflow') •
CVSS: 7.8EPSS: 0%CPEs: 31EXPL: 1CVE-2023-49294 – Asterisk Path Traversal vulnerability
https://notcve.org/view.php?id=CVE-2023-49294
14 Dec 2023 — Asterisk is an open source private branch exchange and telephony toolkit. In Asterisk prior to versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, it is possible to read any arbitrary file even when the `live_dangerously` is not enabled. This allows arbitrary files to be read. Asterisk versions 18.20.1, 20.5.1, and 21.0.1, as well as certified-asterisk prior to 18.9-cert6, contain a fix for this issue. Asterisk es un conjunto de herramientas de telefonía y centralita pri... • https://packetstorm.news/files/id/177819 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 6.8EPSS: 0%CPEs: 5EXPL: 0CVE-2022-42705 – Debian Security Advisory 5358-1
https://notcve.org/view.php?id=CVE-2022-42705
05 Dec 2022 — A use-after-free in res_pjsip_pubsub.c in Sangoma Asterisk 16.28, 18.14, 19.6, and certified/18.9-cert2 may allow a remote authenticated attacker to crash Asterisk (denial of service) by performing activity on a subscription via a reliable transport at the same time that Asterisk is also performing activity on that subscription. Un use after free en res_pjsip_pubsub.c en Sangoma Asterisk 16.28, 18.14, 19.6 y certificado/18.9-cert2 puede permitir que un atacante remoto autenticado bloquee Asterisk (denegació... • https://downloads.asterisk.org/pub/security/AST-2022-008.html • CWE-416: Use After Free •
CVSS: 6.1EPSS: 0%CPEs: 6EXPL: 0CVE-2022-42706 – Debian Security Advisory 5358-1
https://notcve.org/view.php?id=CVE-2022-42706
05 Dec 2022 — An issue was discovered in Sangoma Asterisk through 16.28, 17 and 18 through 18.14, 19 through 19.6, and certified through 18.9-cert1. GetConfig, via Asterisk Manager Interface, allows a connected application to access files outside of the asterisk configuration directory, aka Directory Traversal. Se descubrió un problema en Sangoma Asterisk hasta 16.28, 17 y 18 hasta 18.14, 19 hasta 19.6 y se certificó hasta 18.9-cert1. GetConfig, a través de la interfaz de Asterisk Manager, permite que una aplicación cone... • https://downloads.asterisk.org/pub/security/AST-2022-009.html • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •